RenderToCubemap issues with occlusion culling

I'm using RenderToCubemap to render VR content but am having an issue with some elements not being rendered in all sides of the cubemap. In this particular case it's a firework effect created with Visual Effect Graph. The effect is only visible in the front face of the cubemap and ignored in the others.

I tried turning off occlusion culling on the render camera, but no luck. Is there a way I can force it to render in all sides of the cubemap?